00313nam a2200133Ia 4500008004100000100003800041245002500079250001200104260001500116300000800131650001600139942000700155999001700162190216s9999||||xx |||||||||||||| ||und||  a"Krylov. P. Lobandievsky, S. Men" 0aDescriptive Geometry  a1st Ed.  bNullc1968  a384  aMathematics  cBK  c30613d30613